That is perhaps a more open-ended question than you realize.
How many channels? What is your budget?

A generic answer would be that anything on the SoundDevices website is ideal for one type of production or another. And there are other brand names up there at the summit like Zaxcom, Aaton, Nagra, et.al. But be prepared with a big pile of money if that is where you are going.

OTOH, there are many low-end devices that are quite serviceable. and they will cost you an order of magnitude less $$$ than the high-price spread.